Gas-stove.



W. J. KENNEDY.

GAS STOVE.

APPLICATION FILED 111149, 1909.

985,038 Patented Feb. 21, 1911" nwwtoz wi m wou v I %a flhed l cum-WALTER J. KENNEDY, 0F GRAND RAPIDS, MICHIGAN.

GAS-STOVE.

Specification of Letters Patent.

Application filed January 29, 1909. Serial No. 475,061.

To all whom it may concern:

Be it known that I, WALTER J. KENNEDY, a citizen of the United States,residing at Grand Rapids, in the county of Kent and State of Michigan,have invented certain new and useful Improvements inGas-Stoves, of whichthe following is a specification.

My invention relates to improvements in appliances for use upon asstoves and ranges, and more particularly in connection with the valvesupon which Letters Patent No. 867,139 dated September 24, 1907, No. 887,945 dated May 19, 1908 and No. 894,957, dated August 4, 1908, have beenissued to me, and its objects are: first, to provide an appliance withwhich a kettle of meat, potatoes or other food may be so balanced thatas soon as a given amount of water has been evaporated the kettle willbe raised upward from the burner and the fire will be extinguished, and,econd, to provide an appliance of the kind iereinbefore mentioned thatWill sound an alarm as soon as the kettle is raised upward from theburner. I attain these objects by the mechanism illustrated in theaccompanying drawing in which Figure 1 is an elevation of a gas stovewith the side cut away to show the manner of attaching and operating myappliance. Fig. 2 is a plan of the same. Fig. 3 is a perspective of theappliance disconnected from the stove. Fig. 4 shows the mannerofattaching the elevating arm to the actuating shaft, and Fig. 5 is anend View of the actuating beam showing the manner of attaching theantifriction roller or spool.

Similar letters refer to similar parts throughout the several views.

In the accompanying drawing I have shown, in Fig. 2, the lever J andthevalve case L substantially as the corresponding parts are shown ineach of the several patents hereinbefore mentioned.

My present invention consists of an actuating beam B which is pivotallysecured to the stove A by means of the shaft C, in such a manner that ifeither end of this beam is raised or depressed it will cause the shaftto oscillate accordingly. On the opposite side of the burner K I place asecond oscillating shaft C and on each of these shafts I place two armsG G, secured to the hubs D in such a manner that they may be adjustedlongitudinally to fit any size of stove, and the other ends of thesearms are bent upward, as at G, to pass through the grating K over theburner K, and the upper ends 9, are bent diagonally inward so as toextend over a considerable length on the bottom of any cooking utensilthat may be placed upon the stove. The hubs D are made integral with asecond hub for each arm,'as D, that is mounted upon the shafts C C insuch a manner that they may be moved longitudinal of these shafts toadjust the arms G to any width of stove, and the hubs D and D aresecured to their respective shafts and arms by means of set screws (Z(Z.

The beam B is, as hereinbefore stated, securely attached to the shaft C,and is pro vided with a short slot 0 at each end in which to secure andadjust the yokes E E to vary the movement of the beam, which is actuatedas follows: There is a lever F pivotally secured to the side of thestove A, as at f, which is bent at the attached end to form PatentedFeb. 21, 1911. 7

a bearing F that stands at a considerable G incline from theperpendicular and rests -upon the antifriction roller or spool c insucha manner that if sufficient weight is placed upon the lever F theinclined bearing F will force the end of the beam B downward, and,consequently, the other end of this beam will be forced upward, whichwill cause the shaft C to revolve slightly and carry the outer ends ofthe arms G that are supported upon this shaft to be raised up ward abovethe surface of the stove, and, at the same time, the arm H, which issecured to or made integral with the shaft C, is raised upward by thespool e which causes the free end of the arms G that are secured to theshaft C to rise exactly the same as the before mentioned arms are raisedby the shaft C, so that a uniform support is formed of the ends 9 g ofthese arms for raising the cooking utensil I, as indicated in Fig. 1.The yokes E E are secured to the beam B by means of any suitablefastening, as the stove bolts 6, insuch a manner that they may bereadily adjusted longitudinally of the beam. p

In operation, we will say that a certain amount of meat is placed in thecooking utensil I and, with it, a suflicient amount of water to boilwithout danger of burning the meat. This done the weight F is placedupon the lever F to just raise the utensil and its contents, and thenplace as much more water in the kettle as is necessary to thoroughly andsafely cook the meat, which will.

force the carry the lever J down so as to cause the gas at the burner toignite, as described in the several patents hereinbefore mentioned, andwhen the water has boiled away or evaporated until it reaches the weightfirst placed in the utensil the weight F" will carry the lever Fdownward and force the arms G G upward sufiiciently to raise the utensiluntil the lever J cuts off the flow of gas and the tire is extinguishedby the closing of the valve L, which action renders it impossible toburn the contents of the utensil.

It will be r adily understood that if the valve L and the lever J arenot in use on the stove the operation of this device would be effectivebut to a lesser degree, as the utensil would be raised sulliciently toallow an air space between the bottom of the utensil and the flame ofthe tire to greatly lessen the degree of heat on the utensil and, thus,lessen the danger of burning the contents of the utensil, but when thisis depended upon I prefer that some means he provided for sounding analarm when the appliance is made to operate, as, for instance, a bell Mplaced in position so that the lever F, when moving downward, willengage the handle mand carry it down, as indicated in Fig. 1, and thuscause the bell to ring. With this arrangement the device may be made aseffective upon an ordinary wood or coal stove as on a gas stove,showing, conclusively, that the utensil is not restricted to use upon agas stove, or with the valve and lever heretofore patented to me, asherein stated, but may be used independent thereof.

The dotted lines in Fig. 1 illustrate the movement of the lever F, thebeam 13, the several shafts, arms and the cooking utensil.

If desired the lever F may be raised to and supported upon the spool e,or other proper support, and thereby render the appliance inoperative,or the same object may be accomplished by moving the weight F far enoughback upon the lever F so that it will not exercise suflicient leverageto force the arms G G upward, which is often desirable, as when cookinggriddle cakes, &c.

I find that this appliance may be so nicely adjusted to shut off theheat at the moment that sufiicient evaporation has taken place frombread or cake batter to insure its proper baking and no more.

Having described my invention, what I claim as new, and desire to secureby Let ters Patent of the United States, is:

1. In a safety attachment for stoves, a burner, two parallel shaftsrevolubly mounted directly under the top of the stove with one each sideof the stove burner, a beam securely mounted on one of said shafts andhaving slots therein and antifriction rollers thereon. an arm extendingfrom the other shaft and engaging one of said antifriction arms G G downfar enough to rollers, a lever pivotally secured to the side of thestove and having a portion inclined from the perpendicular in positionto engage the other of said rollers and actuate the beam and cause theshafts to revolve in opposite directions, an adjustable weight upon thelever, and arms upon the shafts having upwardly extending wings inposition to pass through the grating over the burner and when the shaftsare made to revolve and raise any cooking utensil that may be placedupon the stove, to prevent burning the contents thereof.

2. In a safety device for stoves, a burner, two shafts revolubly mounteddirectly under the top of the stove, one each side of the stove burner,a beam centrally mounted upon one of said shafts and adjustable rollersmounted thereon, a lever mounted upon the other shaft in position toengage one of said rollers, a lever pivotally secured to the side of thestove and having a portion inclined from the perpendicular and inposition to engage the other roller to actuate the beam, an adjustableweight on said lever, arms mounted on the shafts and extending by eachother and having upwardly extending wings in position to pass up betweenthe grates over the burner of the stove, and again bent diagonallyinward to positipn to receive the bottom of a cooking utensil over theburner of the stove and so arranged that the utensil will be lowered orraised by the action of the lever and weight, as water is filled into orevaporated from the utensil.

3. In a safety device for stoves, a burner, a shaft revolubly mounteddirectly under the top of the stove each side of the stove burner, abeam mounted upon one of said shafts and having slots in the ends,adjustable rollers secured, one at each end of the beam, a lever mountedon the other shaft in position to be actuated by one of the rollers onthe beam, a lever pivotally mounted on the stove and having a portionmade to stand at an incline from the perpendicular and engage the otherroller to actuate the beam, an adjustable weight on said lever, armsupon the shafts adapted to oscillate with the shafts to actuate anycooking utensil on the stove as weight is added to or removed from theutcn sil, and a bell placed in position to be rung when weight isremoved from the utensil sufliciently to actuate the safety device.

4. In a safety device for use upon gas stoves, a burner, shafts mounteddirectly under the top of the stove with one on each side of the stoveburner, a beam mounted upon one of said shafts, adjustable rollerslocated with one at each end of said beam, a lever secured to the otherof said shafts in position to be engaged and actuated by one of therollers on the beam, a lever pivoted to the stove in position to engagethe other roller and actuate the beam, a weight upon said lever, armsupon the shafts in position to extend upward through the grating overthe stove burner and engage and support a cooking utensil over theburner to raise said utensil when certain weight has been removed fromthe utensil, anda gas valve having an actuating arm extending over thestoveburner in position on the stove to be actuated by the movingutensil to ignite and extinguish a flame as the utensil 1S ralsed orlowered. c

5. In a safety device for gas stoves, a burner, a shaft mounted directlyunder the top of the stove at each side of the stove burner, armsadjustably mounted on said shafts and having the ends bent upwardtoposition to receive and support a cooking utensil, means for actuatingsaid shafts to throw the arms to position to raisethe utensil as weightis removed therefrom, and a gas valve having an actuating arm extendingover the stove burner in position to be actuated when the utensil israised, to extinguish the fire from the stove burner.

6. In a safety device for gas stoves, a burner, a shaft mounted directlyunder the top of each side of the stove burner and having armsadjustably mounted thereon in pothe utensil.

sition to raise a cooking utensil upward from the burner when sufficientwater has evaporated therefrom, means for actuating the shafts and armsat the proper time, a gas valve having an actuating arm extending overthe stove burner in position to be actuated by the rising utensil toextinguish the fire at the burner, and a bell in position to be rung asthe utensil rises upward.

7. I11 combination with a gas stove, a burner and a gas valve thereon, ashaft revolubly mounted just below the top of the stove each side of thestove burner and having arms adjustably mounted thereon in position tobear upon the bottom of a cooking utensil, levers, rollers and weightsarranged to actuate said arms to raise the cooking utensil when acertain amount of water has evaporated, so that the valve may operate toextinguish a fire that may be burning under Signed at Grand RapidsMichigan January 27, 1909.

l/VALTER J. KEN N EDY.

In presence of- I. J. CILLnY, Gno. E. SHAFER.

